B757 initiated takeoff roll from intersection; not utilizing full length; as intended.

Attributes
ACN	766170
Time
Date	200712
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 10000 flight time type : 5500
ASRS Report	766170
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 159 flight time total : 8600 flight time type : 2981
ASRS Report	766620
Events
Anomaly	non adherence : clearance non adherence : company policies non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance Company
Primary Problem	Flight Crew Human Performance

Narrative:

Day 3 of a 4-DAY trip. Had flown an all-nighter that morning. Laid over during day (13 hours scheduled). Did not sleep well. Flew night departure into atl. I was now taxiing out for departure from atl. Very tired. Watched an rj take off on runway 27R and was given clearance to taxi into position and hold runway 27R. I was very tired; repeated instruction to first officer; just as green taxi lights appeared leading to runway. Lights were line of sight with where rj had taken off; so I just turned to follow guidance onto runway. As I was straightening out aircraft nosewheel; tower cleared us for takeoff. As I added power; tower said after a pause; 'from M-20.' (taxiway intersection to runway 27R.) that was my first awareness I had not taxied full length. At that point; it was safer to continue; so the takeoff was not aborted. Fatigue was definitely a factor; which led to loss of situational awareness. Supplemental information from acn 766620: the first officer was heads down completing before takeoff checklist when this happened.

Original NASA ASRS Text

Title: B757 INITIATED TKOF ROLL FROM INTERSECTION; NOT UTILIZING FULL LENGTH; AS INTENDED.

Narrative: DAY 3 OF A 4-DAY TRIP. HAD FLOWN AN ALL-NIGHTER THAT MORNING. LAID OVER DURING DAY (13 HRS SCHEDULED). DID NOT SLEEP WELL. FLEW NIGHT DEP INTO ATL. I WAS NOW TAXIING OUT FOR DEP FROM ATL. VERY TIRED. WATCHED AN RJ TAKE OFF ON RWY 27R AND WAS GIVEN CLRNC TO TAXI INTO POS AND HOLD RWY 27R. I WAS VERY TIRED; REPEATED INSTRUCTION TO FO; JUST AS GREEN TAXI LIGHTS APPEARED LEADING TO RWY. LIGHTS WERE LINE OF SIGHT WITH WHERE RJ HAD TAKEN OFF; SO I JUST TURNED TO FOLLOW GUIDANCE ONTO RWY. AS I WAS STRAIGHTENING OUT ACFT NOSEWHEEL; TWR CLRED US FOR TKOF. AS I ADDED PWR; TWR SAID AFTER A PAUSE; 'FROM M-20.' (TXWY INTXN TO RWY 27R.) THAT WAS MY FIRST AWARENESS I HAD NOT TAXIED FULL LENGTH. AT THAT POINT; IT WAS SAFER TO CONTINUE; SO THE TKOF WAS NOT ABORTED. FATIGUE WAS DEFINITELY A FACTOR; WHICH LED TO LOSS OF SITUATIONAL AWARENESS. SUPPLEMENTAL INFO FROM ACN 766620: THE FO WAS HEADS DOWN COMPLETING BEFORE TKOF CHKLIST WHEN THIS HAPPENED.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.